linux-kernel - [GIT PULL] RISC-V Fixes for 6.14-rc5

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Message-ID: <mhng-179f0b99-b80c-48dd-8eab-c795872207d0@palmer-ri-x1c9a>
Date: Mon, 24 Feb 2025 09:46:58 -0800 (PST)
From: Palmer Dabbelt <palmer@...osinc.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
CC:         linux-riscv@...ts.infradead.org,        linux-kernel@...r.kernel.org
Subject: [GIT PULL] RISC-V Fixes for 6.14-rc5

The following changes since commit 2014c95afecee3e76ca4a56956a936e23283f05b:

  Linux 6.14-rc1 (2025-02-02 15:39:26 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-6.14-rc5

for you to fetch changes up to 245aece3750d3692ae7a44516c1096936bded7ab:

  MAINTAINERS: Add myself as a riscv reviewer (2025-02-14 13:06:55 -0800)

----------------------------------------------------------------
RISC-V Fixes for 6.14-rc5

* A fix for cacheinfo DT probing to avoid reading non-boolean properties
  as booleans.
* A fix for cpufeature to use bitmap_equal() instead of memcmp(), so
  unused bits are ignored.
* Fixes for cmpxchg and futex cmpxchg that properly encode the sign
  extension requirements on inline asm, which results in spurious
  successes.  This manifests in at least inode_set_ctime_current, but is
  likely just a disaster waiting to happen.
* A fix for the rseq selftests, which was using an invalid constraint.
* A pair of fixes for signal frame size handling:
    * We were reserving space for an extra empty extension context
      header on systems with extended signal context, thus resulting in
      unnecessarily large allocations.
    * We weren't properly checking for available extensions before
      calculating the signal stack size, which resulted in undersized
      stack allocations on some systems (at least those with T-Head
      custom vectors).

Also, we've added Alex as a reviewer.  He's been helping out a ton
lately, thanks!

----------------------------------------------------------------
I've been sending PRs on Friday mornings, but these days the week seems to just
run away from me.  That happened the last two weeks and I've been meaning to
try Monday mornings for a while now, so I figured I'll just give it a shot.

Aside from that these all look fine to me: they build/boot like normal, aside
from a spurious Sparse warning in the cmpxchg code.  That might be worth
working around, but doesn't seem like it's worth delaying a fix for a nasty bug
on it.

----------------------------------------------------------------
Alexandre Ghiti (1):
      MAINTAINERS: Add myself as a riscv reviewer

Andreas Schwab (2):
      riscv/atomic: Do proper sign extension also for unsigned in arch_cmpxchg
      riscv/futex: sign extend compare value in atomic cmpxchg

Clément Léger (1):
      riscv: cpufeature: use bitmap_equal() instead of memcmp()

Rob Herring (1):
      riscv: cacheinfo: Use of_property_present() for non-boolean properties

Stafford Horne (1):
      rseq/selftests: Fix riscv rseq_offset_deref_addv inline asm

Yong-Xuan Wang (2):
      riscv: signal: fix signal frame size
      riscv: signal: fix signal_minsigstksz

 MAINTAINERS                                    |  1 +
 arch/riscv/include/asm/cmpxchg.h               |  2 +-
 arch/riscv/include/asm/futex.h                 |  2 +-
 arch/riscv/kernel/cacheinfo.c                  | 12 ++++++------
 arch/riscv/kernel/cpufeature.c                 |  2 +-
 arch/riscv/kernel/setup.c                      |  2 +-
 arch/riscv/kernel/signal.c                     |  6 ------
 tools/testing/selftests/rseq/rseq-riscv-bits.h |  6 +++---
 tools/testing/selftests/rseq/rseq-riscv.h      |  2 +-
 9 files changed, 15 insertions(+), 20 deletions(-)